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Br J Haematol. 1999 Jan;104(1):90-2.

Plasma thrombopoietin concentrations in thrombocytopenic and non-thrombocytopenic patients in a neonatal intensive care unit.

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1
Department of Pediatrics, University of Florida College of Medicine, Gainesville 32610-0296, USA.

Abstract

Thrombocytopenia is a frequent occurrence in the neonatal intensive care unit (NICU), but the role of thrombopoietin (Tpo) in the pathophysiology is unknown. We obtained serial plasma Tpo concentrations in 20 thrombocytopenic neonates in our NICU, and performed bone marrow studies in 15. The initial Tpo levels ranged from undetectable (<41 pg/ml) to 1112 pg/ml and did not correlate with gestational age or platelet count. Neonates with decreased marrow megakaryocytes did not have plasma Tpo levels as high as those reported in adults, particularly in small for gestational age infants (Tpo < 300 pg/ml). In 14/15 neonates followed until resolution, the Tpo concentration decreased as the platelet count increased.

[Indexed for MEDLINE]

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